1 files changed, 23 insertions, 0 deletions
diff --git a/source/blender/draw/engines/eevee/shaders/object_motion_vert.glsl b/source/blender/draw/engines/eevee/shaders/object_motion_vert.glsl
new file mode 100644
index 00000000000..f9011f5ae4e
--- /dev/null
+++ b/source/blender/draw/engines/eevee/shaders/object_motion_vert.glsl
@@ -0,0 +1,23 @@
+
+uniform mat4 currModelMatrix;
+uniform mat4 prevModelMatrix;
+uniform mat4 nextModelMatrix;
+uniform bool useDeform;
+
+in vec3 pos;
+in vec3 prv; /* Previous frame position. */
+in vec3 nxt; /* Next frame position. */
+
+out vec3 currWorldPos;
+out vec3 prevWorldPos;
+out vec3 nextWorldPos;
+
+void main()
+{
+  prevWorldPos = (prevModelMatrix * vec4(useDeform ? prv : pos, 1.0)).xyz;
+  currWorldPos = (currModelMatrix * vec4(pos, 1.0)).xyz;
+  nextWorldPos = (nextModelMatrix * vec4(useDeform ? nxt : pos, 1.0)).xyz;
+  /* Use jittered projmatrix to be able to match exact sample depth (depth equal test).
+   * Note that currModelMatrix needs to also be equal to ModelMatrix for the samples to match. */
+  gl_Position = ViewProjectionMatrix * vec4(currWorldPos, 1.0);
+}